Do you still watch DVDs? Most people do, even if they have HDTVs and Blu-ray players. Why? Because 480p DVDs are still very watchable (the still very good PQ doesn't distract much from the overall enjoyment of the content). That's what SD is like on FiOS. When I had DIRECTV I limited my viewing to HD channels only, which really sucked when they only had a dozen or so. With FiOS I prefer HD (of course) but will watch SD too. I don't feel like I'm missing anything.